--- loncom/auth/lonacc.pm	2010/10/29 20:41:49	1.135
+++ loncom/auth/lonacc.pm	2012/08/21 17:51:58	1.139
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Cookie Based Access Handler
 #
-# $Id: lonacc.pm,v 1.135 2010/10/29 20:41:49 raeburn Exp $
+# $Id: lonacc.pm,v 1.139 2012/08/21 17:51:58 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -156,7 +156,13 @@ sub get_posted_cgi {
 	for ($i=0;$i<=$#lines;$i++) {
 	    if ($lines[$i]=~/^--\Q$contentsep\E/) {
 		if ($name) {
-		    $value=~s/[\r\n]+$//;
+                    chomp($value);
+                    if (($r->uri eq '/adm/portfolio') && 
+                        ($name eq 'uploaddoc')) {
+                        if (length($value) == 1) {
+                            $value=~s/[\r\n]$//;
+                        }
+                    }
                     if (ref($fields) eq 'ARRAY') {
                         next if (!grep(/^\Q$name\E$/,@{$fields}));
                     }
@@ -290,12 +296,17 @@ sub sso_login {
         }
     }
 
-    my $domain = $r->dir_config('lonDefDomain');
+    my $domain = $r->dir_config('lonSSOUserDomain');
+    if ($domain eq '') {
+        $domain = $r->dir_config('lonDefDomain');
+    }
     my $home=&Apache::lonnet::homeserver($user,$domain);
     if ($home !~ /(con_lost|no_host|no_such_host)/) {
 	&Apache::lonnet::logthis(" SSO authorized user $user ");
-	if ($r->dir_config("lonBalancer") eq 'yes') {
-	    # login but immeaditly go to switch server to find us a new 
+        my ($is_balancer,$otherserver) =
+            &Apache::lonnet::check_loadbalancing($user,$domain);
+	if ($is_balancer) {
+	    # login but immediately go to switch server to find us a new 
 	    # machine
 	    &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');
             $env{'request.sso.login'} = 1;
@@ -303,7 +314,11 @@ sub sso_login {
                 $env{'request.sso.reloginserver'} =
                     $r->dir_config('lonSSOReloginServer');
             }
-	    $r->internal_redirect('/adm/switchserver');
+            my $redirecturl = '/adm/switchserver';
+            if ($otherserver ne '') {
+                $redirecturl .= '?otherserver='.$otherserver;
+            }
+	    $r->internal_redirect($redirecturl);
 	    $r->set_handlers('PerlHandler'=> undef);
 	} else {
 	    # need to login them in, so generate the need data that
@@ -380,11 +395,7 @@ sub handler {
 	return $result;
     }
 
-
-    if ($r->dir_config("lonBalancer") eq 'yes') {
-	$r->set_handlers('PerlResponseHandler'=>
-			 [\&Apache::switchserver::handler]);
-    }
+    my ($is_balancer,$otherserver);
     
     if ($handle eq '') {
 	$r->log_reason("Cookie $handle not valid", $r->filename); 
@@ -431,6 +442,27 @@ sub handler {
 
 	&Apache::lonacc::get_posted_cgi($r);
 
+# ------------------------------------------------------ Check if load balancer 
+
+        my $checkexempt;
+        if ($env{'user.loadbalexempt'} eq $r->dir_config('lonHostID')) {
+            if ($env{'user.loadbalcheck.time'} + 600 > time) {
+                $checkexempt = 1;    
+            }
+        }
+        unless ($checkexempt) {
+            ($is_balancer,$otherserver) =
+                &Apache::lonnet::check_loadbalancing($env{'user.name'},
+                                                     $env{'user.domain'});
+        }
+        if ($is_balancer) {
+            $r->set_handlers('PerlResponseHandler'=>
+                             [\&Apache::switchserver::handler]);
+            if ($otherserver ne '') {
+                $env{'form.otherserver'} = $otherserver;
+            }
+        }
+
 # ---------------------------------------------------------------- Check access
 	my $now = time;
 	if ($requrl !~ m{^/(?:adm|public|prtspool)/}
@@ -574,6 +606,17 @@ sub handler {
             }
 	}
 	return OK;
+    } else {
+        my $defdom=$r->dir_config('lonDefDomain');
+        ($is_balancer,$otherserver) =
+            &Apache::lonnet::check_loadbalancing(undef,$defdom);
+        if ($is_balancer) {
+            $r->set_handlers('PerlResponseHandler'=>
+                             [\&Apache::switchserver::handler]);
+            if ($otherserver ne '') {
+                $env{'form.otherserver'} = $otherserver;
+            }
+        }
     }
 # -------------------------------------------- See if this is a public resource
     if ($requrl=~m|^/+adm/+help/+|) {